<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
		  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
		  <el-breadcrumb-item>数据统计</el-breadcrumb-item>
		  <el-breadcrumb-item>数据报表</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片视图区域 -->
		<el-card>
			<!-- 2.为 ECharts 准备一个具备大小（宽高）的 DOM -->
    		<div id="main" style="width: 750px;height:400px;"></div>
		</el-card>
	</div>
</template>

<script> 
// 1.导入 Echart
const echarts = require('echarts');
import _ from 'lodash';

export default {

  name: 'Reports',

  data () {
    return {
    	// 需要合并的数据
    	options: {
	          title: {
	            text: '用户来源'
	          },
	          tooltip: {
	            trigger: 'axis',
	            axisPointer: {
	              type: 'cross',
	              label: {
	                backgroundColor: '#E9EEF3'
	              }
	            }
	          },
	          grid: {
	            left: '3%',
	            right: '4%',
	            bottom: '3%',
	            containLabel: true
	          },
	          xAxis: [
	            {
	              boundaryGap: false
	            }
	          ],
	          yAxis: [
	            {
	              type: 'value'
	            }
	          ]
        }
    }
  },
  created() {
  	//this.getReportsList();
  },
  async mounted() {
  	// 3.基于准备好的dom，初始化echarts实例
    let myChart = echarts.init(document.getElementById('main'));

    const { data:res } = await this.$http.get('reports/type/1');
    	if (res.meta.status !== 200) {
  			return this.$message.error('获取折线图数据失败！')
  		} 
    // 4.准备数据和配置项 合并两个数据res.data和option
    const result = _.merge(res.data,this.options);
   
    // 5.展示数据图表
    myChart.setOption(result);    
  }
};
</script>

<style lang="css" scoped>

</style>